Therapeutic lamp



A ril 20, 1926. 1,582,005

c. s. GROSS THERAPEUTIC LAMP Filed March 15, 1924 INVENTOR far! 61 roSS'ATTOR SIS patented Apr. 20, 1926.

entree: STAT E.

CARL GEORGE GROSS, OF MOUNT -VERNON, NEIV'YQRK, ASSIGNTGEJTO EASTERNLABGRA- I TORIES, INC., OF NEW YORK, N. Y.

THER'ALIPEUTIC LAMP.

Application filed March 15, 1924. Serial No. 699,465.

To aZZ whom it may concern: 7 1

Be it known that I, CARL G. Gnosma citizen of the United States, andresident of Mount Vernon, West'cliester Gounty, New

'York, have invented an Improvement in 'Iherapeutic Lamps, of which thefollowing is a specification.

My device relates in general to electr c portable lamps and inparticular to thera T with regard the reflector 1.

peutic lamps of this class. v

My invention covers lanip which is light and compact and in which thereis a ma;

mum reflection of rays and a. particular t'y e of construction whichgives my lamp advantagesnot found inothers. i

I describe a. preferred torn'r of my lamp in the following specificationand drawings from which the-nature and-objectsiot my invention will bemade clear. In the drawings, like numbers refer to like partsthroughout.

I show in: Fig. 1 a sectional elevation of the entire lamp.

Fig. 2 a. section through 2-2 ot the base and handle.

3 a section through 33 of the base. In the form chosen for illustration,I show a parabolic reflector 1 with which is a base While the base andreflector are preterably indicated as being formed in one piece, theymay be equally well made in two parts it found desirable. Thisreflector, or hood, 1 has a polishec are on its inner curvature which Ihave indicated as extending from 5 to 6 but which obviously may extendover as much of the inner curvature as may be desired. \Vhile I makethis hood of a material which is capable of being polished and secureadvantages in weight and simplicity thereby, any suitable reflector maybe used without affecting the proper operations of the lamp;

In the base is a socket, or receptacle, 7 and a switch 8 having a. throw9. This soc-l:- et and switch are connected in any approved manner as iscustomary; in this case I show them fixedly attached one to the other.In the. socket 7 is a bulb 10 of a size and capacity as may be'i'oundsuitable under given conditions.

Vi ithin the base 4 is a positioning, or adjusting ring 11 held in placeby screws 12 passing through base 1 into said ring 11. The centeropening of this ring is threaded tofit the threads of the'socket 7as'sliown.

The function of this ring 11 is: twofold. It isinserted by screwing downover the socket 7 and, beinga close fit within the base 4, the socket isheld central within the base and the bulb 10 accurately located on theaxis of the reflector 1. i

The other function of the ringll is to position the bulb 10 atitscorrect. focal point Itis clear that the combined switch 8 and socketT have a certain degree otlongitir dinal movement within the base #1 andthat thebulb 10 may be moved to the same extent. Consequently,afteroncehaving located the bulb 10 in its proper focal posi-- tion and thering 11 set, similar bulbs in duplicate lamps may be quickly and easilyfocused by first setting each ring in its predeterminedposition. IFurthermore, different positionings of the bulb 10 with regard to thereflector 1 are possible by varying the longitudinal location of ring 11in base 41.

I also provide a novel method oi attaching a holding member to my lamp;in this instance a handle 13. In the base 4; is a circular opening andextending through this opening is a studli i. This stud 1 1 has a curvedflange 15 which seats in the inner curvature of the base The stud l t isinternally threaded as at 16. Fitting over this stud 1 1 and abuttingthe base 4 is a nipple or the like, .17, which is made somewhat longerthan that portion, 01' the stud 14 which extends outwardly tronrthe 4-.The handle 18'has a threaded projection 18, said threads being adaptedto engage with the internal threads of stud 11. Therefore the handle 13with projection 18. is screwed into stud 14, the two are broughttogether under the screw. action until the p 1,582,605 PATENT series.

it t) nipple 17 abuts tightly against both the base and the socket 10,the cord 20 leading to any convenient source of current.

It is an important feature of my lamp that I make the reflector and thebase portion in one piece and thereby gain a light and rigid structurewithout the possibilitythat these two members can move with respect toone another under normal conditions of use.

Furthermore, the parts within the lamp are retained in their properposit-ions and this is particularly true of the relation of the bulbwith respect to the reflector for the reason that the bulb cannot shiftfrom its correct focal position. The advantages of this in effectivenessof use are obvious and are not found elsewhere.

The structure of my device permits of facility in manufacture and, whileI may prefer to spin it from a single sheet of metal, many methods maybe used to produce my lamp in a simple and inexpensive manner.

In operation my lamp is used as are other therapeutic lamps, the currentbeing con.- trolled by the throw 9 of the switch 8; this throw beingmost conveniently located for operation by the hand of the one holdingthe lamp.

From the foregoing it is clear that my invention embodies new and noveladvantages not found in other lamps of like class and that othersuperiorities accrue from the rigidity of the structure, ease ofmanufacture, and from facility of control in the use of my lamp.

Many variations and changes can be made from the preferred embodiment ofmy lamp as described and shown without departing from the spirit of myinvention and I desire to have my claims interpreted with suchvariations and changes in mind.

I claim:

1. A lamp including a reflecting member and a base member formed in onepiece, a switch member in the base, the actuating element of whichprojects through an open ing in said base, a bulb holding member in thebase, and a positioning member in said base in threaded relation withsaid bulb holding member.

2. A lamp including a reflector and base formed in one piece, a lampsocket and a switch member in said base and a threaded ring adapted toengage and support and position said socket and switch member againstthe inner wall of said base.

In testimony whereof, I have signed my name to this specification this11th day of March 1924.

CARL GEORGE GROSS.

